The symptoms of allergy includes irritation of eyes, ears and nose, skin rashes, blisters, head ache, asthma and breathing difficulty. The symptoms of allergy to a single substance may vary from people to people, when some suffer from skin rashes due to egg protein; some has irritation in their throat.
Headaches can be associated with allergy while most of the headaches are not rooted on allergies. Allergic headaches are very painful and annoying and it exerts pressure in the sinus area, eyes and head, but these headaches cannot be helped by the normal headache medication like acetaminophen or painkillers. In some cases thorough assessment and check up is needed to know the real cause of the headache: allergy or other cause.
Allergy headache are caused due to some substance in nature which is capable of triggering elevated immunological responses in people. Finding the real causes of these headaches can help to prevent and treat it. There are a number of causes for allergy headache like, pollen allergy, food allergy, and allergy to certain preservatives or chemicals.
Food allergy can trigger persistent and painful allergies in many people. Though it is difficult to pin point the relation between your headache and the food item, keeping a journal of what you eat and when you have the attack of migraine can help a lot. Allergy related headache can be best prevented if you avoid the particular food found to trigger the headache.
Certain chemical found in the foods which are used as flavor enhancer or preservatives can cause the allergy. Monosodium glutamate (MSG) mainly found in packed food or Chinese dishes are one of the major causes of headache related to a chemical substance in food. So you may be getting the allergy every time you eat from a restaurant even if you have entirely different meals. It is not only MSG that can trigger headache; aspartame used as artificial sweetener, tyramine found in cheese and phenyl ethylamine can also cause allergic headache.
Seasonal allergies like pollen allergy can also cause sinus headaches which are indeed painful and associated with throbbing pain in the eyes, cheeks and forehead. Hay fever and other respiratory allergies is sometimes the root cause of sinusitis.
There are three types of allergic headaches namely the sinus headache, migraines and the cluster headaches.
Sinus headaches are the result of swelling of the membrane lining of the sinus cavity, which are the spaces adjacent to nasal passage. These headaches occur when the sinus becomes inflamed or congested due to some allergic reactions, cold or pain in the upper tooth. Hay fever and rag weed allergy are the main cause of allergy related sinusitis.
Migraines are throbbing pain in both or one side of the head along with nausea or vomiting. The severity of this headache can vary from mild to unbearable and it is heighten by bright light and loud noise. Some people are even sensitive to touch on their scalp or arms during migraine headache.
Migraine headache can be of two types. The classic headache, which is very severe and might last for many hours or even days. It is also associated with loss of vision or aura. The common migraine headache last for a small period is less severe and not associated to loss of vision.
Cluster headaches are associated red, swollen and watery eyes and pain in the eyes, nose and head. The head ache may begin suddenly and might last for one to two hours. This may happen for two to eight weeks (cluster period) and last for the same time each day.
As the head ache is caused by allergy to a food or some substance, the first step in treatment is to find out the correct cause of the headache. If the allergen can be avoided like some food or chemical additive, it can help to reduce the attack of the allergy.
In other cases, where the allergen cannot be prevented, medications can help to treat the headache. Normal headache medicines and painkillers cannot help to relieve these head ache and the allergy medicines like antihistamine or steroids are needed to relieve the allergy related headache as is in the case of all other allergic symptoms.